baber/WOPTO huggingface dataset:
Patent CA-2089522-C (CA)
Title: Driving mechanism for a photographic processing apparatus
Inventor: PICCININO RALPH LEONARD JR
IPC: G03D3/13
Filed: 1993-02-15
Granted: 2002-04-02
Abstract: An apparatus for processing photosensitive materials, which comprises: a tank through which a processing solution is to be pumped; a rack having integral means to facilitate its insertion and removal from the tank, the rack and the tank are relatively dimensioned so that a small volume for holding processing solution and photosensitive material is formed between the rack and the tank; means for circulating the processing solution through the small volume; a first plurality of rollers for moving the photosensitive material into or out of the small volume; a second plurality of rollers connected to the rack; a third plurality of rollers connected to the tank, wherein the second and third plurality of rollers move the photosensitive material through the small volume; means for driving the second plurality of rollers; and means for preventing processing solution from flowing between the driving means and the second plurality of rollers to reduce the space that would otherwise be filled by the processing solution.
Patent CA-2093143-C (CA)
Title: Integrated safety monitoring and alarm system
Inventor: STUMBERG L HERBERT
IPC: G08B21/02
Filed: 1992-07-31
Granted: 1997-07-29
Abstract: The system allows a firefighter to monitor a variety of safety related parameters during firefighting activities through audible (18a, 18b) and/or visual (16) means. The system monitors the pressure (26) of the firefighter's breathing system and also monitors ambient temperature (42) and motion (46) of the firefighter. An audible alarm (18a, 18b) is activated to indicate a potential emergency situation relating to low remaining air time (22, 26, 36, 12), impending thermal breakthrough (42, 44, 12) or lack of motion of the firefighter (46, 12).
Patent CA-2100023-C (CA)
Inventor: KONDO NAOKI
IPC: A44B19/36
Filed: 1993-07-07
Granted: 1996-09-17
Abstract: A concealed slide fastener top end stop formed by wrapping around an edge of a fastener tape with a U-shaped piece of synthetic resin and fusing the U-shaped piece, wherein the U-shaped piece is fused at its open ends through the fastener tape, such fused-through portion being shifted inwardly from a tape folded-in part, to which a row of fastener elements is attached, and being at an angle different from that of the fastener elements.
Patent CA-2100222-C (CA)
Inventor: HETRICK ROBERT E
IPC: G01N27/00
Filed: 1993-07-09
Granted: 1999-02-02
Abstract: A sensor determines a wide range of air-to-fuel ratio values (A/F) about the stoichiometric A/F in a gaseous mixture which has oxidizing and reducing species as might be found in an automotive exhaust.  The sensor includes a surface that serves simultaneously as the working electrode of a solid-state oxygen concentration cell and as a surface whose workfunction changes from a higher to a lower value as the oxidizing and reducing species in the adjacent gas phase, and in interaction with the surface, pass from an excess oxidizing to the excess reducing condition about the stoichiometric ratio. In one embodiment, the surface exposed to the gas in question is the emitter electrode of a thermionic diode which emits positively charged alkali ions into the exhaust ambient where they are collected by a nearby collector electrode.  Changes in the ratio of the oxidizing and reducing species about the stoichiometric ratio produce corresponding changes in the thermionic emission.  Oxygen pumping to or from the working electrode modifies the thermionic emission in a systematic way to provide a pumping method of operation in which the magnitude of the pump current required to maintain the thermionic emission current at some preset value despite changes in the A/F ratio of the ambient leads to a relationship between pump current and A/F that can be used to sense the A/F.
Patent CA-2110335-C (CA)
Inventor: KAMIYA TAKASHI
IPC: A61K31/7042
Filed: 1993-11-30
Granted: 2004-01-20
Abstract: A novel process for producing N'-acyl-5'-deoxy-5-fluorocytidine derivatives using the novel 5'-deoxy-5-fluoro-N4, 2'-0,3'-0-triacylcytidine derivatives are provided.   5-Deoxy-1,2,3-tri-0-acyl-.beta.-D-ribofuranoside is reacted with 5-fluorocytosine to produce 5'-deoxy-2',3'-di-0-acyl-5-fluorocytidine, followed by acylation. The acyl radicals of the obtained 5'-deoxy-5-fluoro-N4,2'-0,3'-0-triacylcytidine derivatives are selectively de-D-acylated to obtain N4-acyl-5'-deoxy-5-fluorocytidine derivatives. From fluorocytosine, N4-acyl-5'-deoxy-5-fluorocytidine derivatives can be ob-tained through very few steps in high yield.
Patent CA-2112338-C (CA)
Title: Material dispensing system
Inventor: NEWTON CLOYCE DEAN
IPC: A01M21/04
Filed: 1993-12-23
Granted: 2003-04-01
Abstract: A material dispensing system for agricultural pesticides and chemicals. The system uses distributed processing with a main controller and a plurality of sub-controllers to control pesticide metering devices. The metering devices are attached to a pesticide container. -22-~
Patent CA-2119015-C (CA)
Title: Method of high-side pressure regulation in transcritical vapor compression cycle device
Inventor: LORENTZEN GUSTAV
IPC: F25B45/00
Filed: 1991-09-16
Granted: 2002-07-09
Abstract: A vapor compression cycle device operating at supercritical pressure in the high-side of a circuit comprising compressor (10), gas cooler (11), internal heat exchanger (12), throttling valve (13), evaporator (14), low pressure refrigerant receiver is addi-tionally provided with means (3) for detection of at least one operating condition of the circuit, preferentially detection of a par-ameter representing the refrigerant temperature adjacent to the outlet of the gas cooler (11).
Patent CA-2121753-C (CA)
Title: Mobile bale collector and mobile baler suitable therefor
Inventor: MEIJER THOMAS HARKE DANIEL
IPC: A01D90/08
Filed: 1994-04-20
Granted: 2003-07-08
Abstract: Mobile bale collector, comprising a frame, bale-carrying means, coupling means which are suitable for coupling the frame to a mobile baler in order to receive essentially block-shaped bales onto the carrying means from a bale outlet of the baler via a front end - viewed in the direction of travel - of the carrying means, blocking means at a rear end of the carrying means, and locking means, in such a way that in a collecting state the blocking means collect and retain a number of bales on the carrying means, and in an unloading state the locking means release the blocking means in order to allow through and deposit on the ground bales collected on the carrying means. The carrying means are coupled to the frame by means of first hinge means which are disposed between the frame and the rear end of the carrying means, the first hinge means having an axis of rotation extending horizontally and at right angles to the direction of travel. Disposed between the frame and the carrying means are lifting means which exert such a force on the carrying means that the front end of the carrying means is in a high position while receiving a bottom bale, and the front end is subsequently in a low position for receiving a top bale on the bottom bale.
Patent CA-2126517-C (CA)
Title: Pulp defibration or preparation plate, and process using said plate
Inventor: MAYBON GUY
IPC: B02C7/12
Filed: 1994-06-22
Granted: 1998-08-25
Abstract: A disc for defibering or refining paper pulp according to the invention includes a grinding surface which has a large number of ribs (9-12) separated by grooves (13-15). The disc body (8) consists of a first material such as stainless steel or cast iron, ensuring the general mechanical robustness of the disc in use. The upper part of the ribs (9-12) consists of a layer (16-19) of an abrasion-resistant material based on tungsten carbide particles bonded in a metal alloy whose melting and weldability characteristics are appropriate for refurbishing with a laser on the disc body (8). The ribs (9-12) are successively refurbished by scanning with a laser beam and a nozzle for spraying powder, in one or a number of runs. <IMAGE>
Patent CA-2128117-C (CA)
Inventor: SAKAKI MAMORU
IPC: B41M5/52
Filed: 1994-07-15
Granted: 1999-12-28
Abstract: An ink-jet recording method for forming an image on a recording medium by ejecting ink droplets through an orifice of a recording head in response to a recording signals comprises ejecting an ink having a surface tension ranging from 25 to 35 dyn/cm onto a recording medium constituted of a base sheet and a coating layer formed on the base sheet to form an image, the coating layer being selected from (a), (b), and (c) below: (a) a coating layer mainly composed of polyvinyl alcohol of a saponification degree of from 75 to 98 molo and a polymerization degree of from 100 to 500, or a derivative thereof. (b) a coating layer mainly composed of a copolymer of vinylpyrrolidone with a vinyl monomer having a hydrophobic group, and a polyalkylene oxide or a derivative thereof, and (c) a coating layer mainly composed of an aromatic polyvinylacetal resin, and a polyalkylene oxide or a derivative thereof.      A color image forming method forming a color image on a recording medium employing four color-inks of yellow, cyan, magenta, and black comprises ejecting inks having the surface tension onto the recording medium.
Patent CA-2128816-C (CA)
Title: Floor cleaning and polishing equipment
Inventor: BROWN DENNIS JOHN
IPC: A47L11/162
Filed: 1994-07-26
Granted: 2004-11-16
Abstract: A combined floor cleaning and floor polishing machine comprises a motor housing (2), an inclined operator handle (2), a base (3) with castors (4) and a motor-operated shaft (5) for a rotating disc (7) supporting interchangeably a cleaning pad or polishing pad, so that the machine weight is carried partly on the pad and partly on the castors (4).        If the handle (2) is tilted the machine moves laterally to one side or other in dependence upon the direction of tilt. The use of elastomeric torsion blocks (8) to connect the motor housing (1) to the base (3) provides an elastic resistive force in either tilt direction and thus improves controllability of the cleaning/polishing movement in either lateral direction, by a simple, robust and inexpensive construction. (Fig.2)
Patent CA-2143011-C (CA)
Title: System and method for heating and gasification of residual waste liquor
Inventor: KITTO JOHN B JR
IPC: C10J3/54
Filed: 1995-02-21
Granted: 2000-04-25
Abstract: A system for providing heated fluidized bed gasification of a residual waste liquor provides a bed of granular material and a source of liquor provided to the material bed. An injector is situated in the material bed and communicates with an air source, a fuel source and a steam source. Fuel and air are combusted in the injector and mixed with the steam which forms a combustion product and steam mixture which is in turn injected into the material bed. The combustion and mixing is separated from the bed material by being confined within the injector.      The injector is a bubble cap having at least one hole or an injector made of a porous ceramic material.
Patent CA-2144849-C (CA)
Inventor: BERGER J LEE
IPC: A61B17/32
Filed: 1993-09-14
Granted: 2004-08-03
Abstract: A surgical hand support apparatus (10) comprising a base block with a finger securing assembly (20) comprising two uprights, a center post, a cross member interconnecting the uprights and a locking mechanism mounted on the center post to lock the cross member against the fingers (104) of the patient. A  thumb securing assembly (60) is also mounted to the base block (12), the.thumb securing assembly comprising a standard support member secured to the base block and a hook shaped rod rotatably mounted in the standard support member. A wrist securing assembly (80) is incorporated comprising a plurality of brackets slidably mounted to the base block and a cylindrical cross bar mounted in the uprights. A lock screw is connected to the cylindrical cross bar to lock the cross bar in place to secure the wrist of the patient and allow selective positioning of surgical instruments with respect to the hand.
Patent CA-2149687-C (CA)
Inventor: MCATEER JEFFREY PHILLIP
IPC: H04R3/00
Filed: 1995-05-18
Granted: 1999-04-06
Abstract: The long term average broad band gains of a plurality of individual signal channels, associated with a corresponding plurality of microphone elements, are electronically and dynamically adapted to one another. This is realized by periodically and dynamically processing the signals from the individual microphone elements. More specifically, the processing is such that the long term average broad band gain of the signal channels of the individual microphone elements is dynamically adjusted, an energy estimate of each microphone signal channel is averaged over the long term and the difference in energy between the signal channels is used to readjust the long term average broad band gain of the microphone signal channels to minimize those differences. In one embodiment the adjustment is realized by obtaining an estimate of the energy of the adjusted signal in each microphone signal channel, obtaining the differences between the energy estimates and averaging the difference over the long term to obtain a gain differential correction factor which is used to readjust the long term broad band gain of at least one of the microphone signal channels to minimize the gain difference between the microphone signal channels. In another embodiment, a long term estimate of the energy in each microphone signal channel is obtained. A ratio of the energy estimates is obtained and used to adjust the long term average broad band gain of at least one of the microphone signal channels to equalize the gain in the microphone signal channels.
Patent CA-2158011-C (CA)
Inventor: GRAY STEVEN L
IPC: A47L9/28
Filed: 1994-04-13
Granted: 1998-10-13
Abstract: In accordance with the present invention, a handle and wand system for a vacuum cleaner is provided which includes an enclosed electrical system which may be used to provide electrical power to a powered floor nozzle or other powered nozzles.  The handle and wand system of the present invention may be employed in either a canister vacuum or a central vacuum unit.  In one embodiment, the system includes a handle and suction hose assembly which permits the hose, which includes conducting wires, to be freely rotated while attached to the handle.  In another embodiment, means are provided for easily attaching, locking and detaching the components of the handle and wand system of the present invention while providing both a vacuum seal and a plurality of low resistance electrical contacts between the elements of the system of the present invention.  In a further embodiment, a swivel elbow is provided to attach the handle and wand system of the present invention to a powered floor nozzle.  In another embodiment, an interface is provided easily for attaching, locking and detaching the handle and wand system of the present invention to and from non-powered cleaning tools.
Patent CA-2172521-C (CA)
Title: Supercritical steam pressurized circulating fluidized bed boiler
Inventor: GOUNDER PONNUSAMI K
IPC: F22B29/02
Filed: 1994-10-04
Granted: 2000-03-21
Abstract: A circulating fluidized bed boiler comprises a fluidized bed combusdon chamber (14), a recirculating system for recirculating fluidized solids through the combustion chamber, and a plurality of tubes (58) for withstanding supercritical pressure are disposed around the walls of the combustion chamber (14) for circulating cooling fluid between an inlet header (54) at the bottom of the chamber and an outlet chamber (56) at the top of the combustion chamber (14). A water steamseparator (66) directs steam to a superheater (70) and is bypassed during normal operation.
Patent CA-2173643-C (CA)
Inventor: BRONS GLEN
IPC: C10G45/02
Filed: 1996-04-09
Granted: 2007-08-14
Abstract: The invention relates to an integrated, continuous process for the removal of organically bound sulfur (e.g., mercaptans, sulfides and thiophenes) comprising the steps of contacting a heavy oil, sodium hydroxide, hydrogen and water at a temperature of from about 380°C to 450°C to partially desulfurize the heavy oil and to form sodium sulfide, contacting said sodium sulfide with a transition metal in water to form a transition metal sulfide, sodium hydroxide and hydrogen. The sodium hydroxide is recirculated and the transition metal sulfide is removed. The partially desulfurized, dewatered heavy oil is treated with sodium metal under desulfurizing conditions, typically at a temperature of from about 340°C to about 450°C, under a hydrogen pressure of at least about 50 psi to essentially desulfurize the oil, and form sodium sulfide. Optionally, the sodium salt generated can be regenerated to sodium metal using regeneration technology. The process advantageously produces essentially sulfur-free product oils having reduced nitrogen, oxygen and metals contents and reduced viscosity, density, molecular weight and heavy ends.
Patent CA-2174477-C (CA)
Title: Integrated catalytic/non-catalytic process for selective reduction of nitrous oxides
Inventor: MANSOUR MANSOUR N
IPC: B01D53/56
Filed: 1996-04-18
Granted: 2007-04-17
Abstract: In a combined SCR-SNCR process for reducing the NO content of a stream of combustion products by NH3 SCR is employed for primary NO reduction. NH, is injected into the SNCR zone only when the NO content of the SCR effluent exceeds a preselected design maximum value
Patent CA-2182558-C (CA)
Inventor: ATKINS MARTIN PHILIP
IPC: C07B61/00
Filed: 1996-08-01
Granted: 2006-10-24
Abstract: This invention relates to a process for the production of lower aliphatic esters by reacting a lower olefin with a saturated lower aliphatic mono-carboxylic acid in the vapour phase in the presence of a heteropolyacid catalyst characterised in that an amount of water in the range from 1-10 mole % based on the total of the olefin, aliphatic mono-carboxylic acid and water is added to the reaction mixture during the reaction. The presence of water enhances the yield of the desired ester. The reaction mixture may optionally contain a di-ether to minimise the by-products.      The process is particularly suitable for producing ethyl acetate from ethylene and acetic acid in the presence of water.
Patent CA-2184676-C (CA)
Title: Viscous fluid type heat generator with means for maintaining optimum lubricating condition of a bearing
Inventor: BAN TAKASHI
IPC: F24J3/00
Filed: 1996-09-03
Granted: 2000-01-18
Abstract: A viscous fluid type heat generator adapted for being incorporated in a heating system has front and rear housings in which a heat generating chamber containing therein a viscous fluid and a heat receiving chamber permitting a heat exchanging liquid to flow therethrough. The heat generator also has a drive shaft rotatably supported by an anti-friction bearing unit and having mounted thereon a rotor element rotating in the heat generating chamber to apply a shearing action by which the viscous fluid generates heat absorbed by the heat exchanging liquid flowing in the heat receiving chamber. The heat generator has an intermediate substance unit arranged between the heat generating chamber and the anti-friction bearing unit so as to provide a thermal isolation therebetween. The intermediate substance unit may be a shaft sealing unit, a closed vacant chamber or a combination of the shaft sealing unit and the closed vacant chamber.
Patent CA-2185879-C (CA)
Title: Electrochemical sensor
Inventor: HESS CHARLES J
IPC: G01N27/401
Filed: 1996-09-18
Granted: 1999-08-17
Abstract: An electrochemical sensor wherein an ion impermeable plug is interposed between the adjacent faces of the large plugs that are used in the salt bridge.  The salt bridge also includes a solid cylindrical plug that passes through the  ion  impermeable  plug  to  thereby  interconnect  the adjacent large plugs.  The large plugs have a central bore for receiving the glass sense electrode.  The impermeable plug has protrusions to provide a better seal between the impermeable plug and the glass sense electrode and the impermeable plug and the housing in which the salt bridge is inserted.  In addition, the sensor may also include a rigid liner between the large plugs and the glass sense electrode to act as a barrier to prevent damage to this sense electrode during and after impregnation.
Patent CA-2187127-C (CA)
Inventor: JARAMILLO ALFONSO SR
IPC: B63B29/20
Filed: 1996-10-04
Granted: 2007-10-23
Abstract: An automatically retractable step assembly for watercraft rotatably mounts to a fixed step assembly fixed to the craft, a movable sliding chassis mounted on tracks, or a manually retractable step. The automatically retractable step assembly can also rotatably mount to another automatically retractable step assembly. The automatically retractable step assembly is preferably formed by a U-shaped member with outward projections that rotatably fit over mating projections from a supporting element. The U-shaped member is biased by torsion springs to rotate with respect to the supporting elements towards a position in which the retractable step assembly will be stored and away from the water. The retractable step assembly, during use, is rotatable against the bias and towards or into the water by pulling or stepping on the retractable step. The step also has a quick-disconnect mechanism to simplify maintenance.
Patent CA-2189950-C (CA)
Inventor: RILEY THOMAS ATKIN DENNING
IPC: H03L7/113
Filed: 1995-05-12
Granted: 2005-08-09
Abstract: A fractional - N frequency synthesizer comprises a voltage-controlled oscillator (107) for generating an output signal (Fo) in response to a control voltage derived by a digital-to-analog converter (105) from a digital error signal (e). The error signal is derived by a differencing device (103) which subtracts a digital signal (Do) representing the actuated frequency of the output signal from an input signal (Fd) having the desired frequency for the output signal. The digital signal representing the output signal frequency is derived by a frequency discrimination device (101) which determines the instant frequency of the analog output signal and provides a corresponding digital representation with zero static frequency error. In preferred embodiments, the frequency discrimination device is a delta-sigma frequency synthesizer in combination with a decimator (102). This frequency synthesizer configuration avoids deficiencies due to non-linearity and noise sensitivity of analog phase detectors. The invention also provides a frequency discriminator (101') comprising a feedforward path including a multimodulus divider (201) for dividing the frequency of a digital signal (Fo) in dependence upon a division ratio control signal, comparison (202) for comparing the divided frequency signal with a reference frequency signal (Fref) to provide an error signal, and a feedback path comprising a circuit having a transfer function of 2-Z-1 and responsive to the error signal and the reference frequency signal to provide the division ratio control signal.
Patent CA-2191763-C (CA)
Inventor: WHITING IAN GERALD
IPC: G01S7/02
Filed: 1995-06-06
Granted: 2007-04-03
Abstract: The invention relates to a radar apparatus provided with a sidelobe blanking circuit, having a directive antenna (1) and a main receiver (2), an auxialiary antenna (3) and an auxiliary receiver (4), moreover having a differential antenna (13) and a differential receiver (14). Comparators (6, 15) compare the output signal of the main receiver (2) with the outputs of the auxiliary receiver (4) and the differential receiver (14). Blanking does not occur when the output signal of the main receiver (2) is larger than both other output signals.